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am1weekly_2003-340_2003-346

Mission Operations Days: 2003/340 to 2003/346
December 06, 2003 00:00:00 GMT to December 12, 2003 00:00:00 GMT


Terra Spacecraft and MODIS Instrument Status:

AM-1 "Terra" is in Normal Mode
PFM MODIS is in A-Side Nominal Science Mode
(Cross Strapped with FR B)
Component State(s) Comment
Blackbody A On (290K); B Off Nominal Science Mode
Calibration Electronics A On; B Off Nominal Science Mode
Control Processor A On; B Off Nominal Science Mode
Nadir Door Unlatched, Open Nominal Science Mode
Space View Door Unlatched, Open Nominal Science Mode
Solar Diffuser Door Unlatched, Screened Permanent Configuration
FDDI Formatter A On; B Off Nominal Science Mode
FDDI Port A On; B Off Nominal Science Mode
FIFO Memory #1 & #2 On; #3 & #4 Off Nominal Science Mode
Format Processor A Off; B On Nominal Science Mode
Power Supplies #1 On, #2 Off Nominal Science Mode
PV VIS FPA A On; B Off Nominal Science Mode
PV NIR FPA A On; B Off Nominal Science Mode
PV SMIR FPA A On; B Off Nominal Science Mode
PV LWIR FPA A On; B Off Nominal Science Mode
PC LWIR FPA A On; B Off Nominal Science Mode
RC Outgas Heaters All 3 (CS, IS, OS) Off Nominal Science Mode
RC LWIR FPA Heater On (83K) Nominal Science Mode
RC SMIR FPA Heater Off Nominal Science Mode
Scan Assembly A On; B Off Nominal Science Mode
SDSM Off Nominal Science Mode
SRCA Off Nominal Science Mode
PS1 Survival Heater Enabled Nominal Science Mode
PS2 Survival Heater Enabled Nominal Science Mode
Timing Generator A On; B Off Nominal Science Mode
Flight Software Rev BD + 11 sets of patches
  • CP07 to Survival Mode - No SDD to closed command (1 patch)
  • CP07 to Safe Mode - No FR OFF Command (1 patch)
  • CP07 to Safe Mode - No SDD to closed command (1 patch)
  • CP07 to Science Mode - Turn on FRB instead of FRA (1 patch)
  • CP07 to Outgas and Science Mode - Turn on FRB instead of FRA (1 patch)
  • FR Error Counting and Statistics (2 patches)
  • FR 1000ms time code patches (3 patches)
  • FR Band 5 Gain Change (20 commands)
  • FR BB Ideal Output Values (1 patch)
  • FR A EEPROM KME Fast 1 word patch (1 patch)
  • FR B EEPROM KME Fast 1 word patch (1 patch)
Nominal Science Mode
Inhibit Ids Set none Nominal Science Mode
TMON 66 Disabled Nominal Science Mode
TMON 67 Disabled Nominal Science Mode
TMON 68 Enabled Nominal Science Mode
TMON 69 Disabled Nominal Science Mode

This Week’s Completed MODIS Activities:

Saturday, December 6, 2003

None

Sunday, December 7, 2003

None

Monday, December 8, 2003

None

Tuesday, December 9, 2003

2003/343 20:26:58-20:35:46 ATC MOD_OA16_SDSM_SCRN_NO_DOOR_A.4 OA-16: SD/SDSM screened side A, no door movement
2003/343 21:16:26-21:37:21 ATC MOD_OA20_SRCA_10W_RAD_A_Base.2 OA-20: SRCA 10W Continuous Radiometric - A Side, Using Lamp #1 Data collection is from 21:32:20-21:37:21 (in S/C Night)

Wednesday, December 10, 2003

None

Thursday, December 11, 2003

None

Friday, December 12, 2003

None

This Week’s Scheduled MODIS Activities Not Completed:

None

Upcoming MODIS Events:

Saturday, December 13, 2003

PFM Lunar Calibration via spacecraft roll maneuver (-6.4083 degrees)
2003/347 16:52:40 ATC MOD_OA03_FR_DAY_RATE
2003/347 ??:??:?? Real-Time Terra FOT commands S/C to low-fidelity pointing
2003/347 17:38:45 ATC MOD_OA03_FR_NIGHT_RATE (03:23 early)
2003/347 18:12:33-18:19:19 ATC MOD_OA08_ROLL_MAN
2003/347 ??:??:?? Real-Time Terra FOT commands S/C to high-fidelity pointing
2003/347 18:34:56 ATC MOD_OA03_FR_DAY_RATE (03:23 late)
2003/347 19:21:01 ATC MOD_OA03_FR_NIGHT_RATE

Maneuvers:

The next Lunar Calibration will occur on DOY 2003/347 (December 13, 2003), with a roll angle of -6.4083 degrees and a data collect time from 18:12:41 to 18:19:11.

MODIS Anomalies:

Terra SSR Anomaly:

Although not directly the result of a MODIS problem, the most recent Printed Wire Assembly (PWA) failures in the Terra Solid State Recorder (SSR) do affect MODIS data. See the Non-MODIS Significant Events section below for more details.

Terra SFE Anomaly:

Although not directly the result of a MODIS problem, the SFE anomaly is causing an unrecoverable loss of all current MODIS Direct Broadcast data. Normal science data recording and playbacks are functioning properly. See the Non-MODIS Significant Events section below for more details.

General Instrument Comments:

MODIS is in Science Mode, using all A-side components, but cross-strapped to Formatter B, with the blackbody maintained at 290K and the Solar Diffuser Door at the Screened position.

MODIS Telemetry Trends:

Nominal telemetry trending is ongoing.

Non-MODIS Significant Events:

Terra Solid State Recorder Anomaly

Overview:

The SSR Anomaly is still under investigation. MODIS currently is operating with 34 Supersets allotted for its buffer. There are plans in the works for possibly power cycling the SSR to get back PWA’s that are in the Bad List, but no date has yet been set. There are no current plans for a change in science data capture rates. For details, see previous reports.

Terra SFE Anomaly

Overview:

The SFE-A on Terra is corrupting every fourth byte of data it produces for the DAS-1 feed to the Direct Broadcast equipment. The anomaly is currently under investigation and diagnosis. For details, see previous reports.

Additional Information:

The recycle of the SFE-A is planned for sometime after Tuesday, December 16, 2003 (DOY 2003/350) at 20:00:00 GMT, if approval comes through from NASA headquarters. There will be a data loss for all instruments for about 15 minutes. The plan will be for a recycle during the time ASTER is not imaging.

The EMOS mission status webpage (which includes instrument data loss records) can be found at the following URL. Note that a password is now required to access the EOS mission links web pages. There are directions at the URL below for how to obtain a username/password.

http://jupiter02.gsfc.nasa.gov/links/links.htm

Limited Life Item Status:

SRCA 10W Lamp #1: 222.7 of 500 hours
SRCA 10W Lamp #2: 163.5 of 500 hours
SRCA 10W Lamp #3: 172.7 of 500 hours
SRCA 10W Lamp #4: 62.2 of 500 hours

SRCA 1W Lamp #1: 564.9 of 4000 hours
SRCA 1W Lamp #2: 276.7 of 4000 hours

Solar Diffuser Door: 2146 of 3022 Movements
Nadir Aperture Door: 536 of 1316 Movements
Space View Door: 439 of 1316 Movements